Two-legged microphones, where's the third foot? A silent transformation wave machine。
The last time i played with the electronics, i had to get three feet of a normal sensor. A half-day online search is not clear, so you can just open up your own research. I found a lot of interesting stuff in this thing. It's understandable。
It's divided into two main parts, one electric, and the other a field effect tube like a small switch. The one with the capacitor was pumped out of the plant, and there was a thin metallic membrane in it that could shake with the sound. As the distance of the film and the fixed plate changes, the size of the capacitor changes. And that's how the electron transforms the voltage, and that's how the sound signals change。
The key is to save an electricity foot, thanks to that effect tube. It is able to export the capacitor signal as a switch and automatically adjust the current size magnification signal. If traditional circuits were used, this step would have to be accompanied by at least two electrical barriers to a power line, but now it's all plugged in, not even the extra trigger。
There's a straight-on-the-speech cap in the back, and it's just a direct-off signal. Why? Because the front signals are mixed with stable straight currents and variable acoustic signals, failure to separate leads to deterioration of the back equipment. This little cape is stuck here to screen the signals, especially critical。
It is also practical, with a magnifier immediately turned into a small soundbox, and computer-converted modules can store sound. Now, think about it, those dozens of dollars of bluetooth boxes at the mall, the core could be modified. I used to think that high technology was mysterious, but it was a combination of components。
Two days ago, i was wondering why the smartphones were listening without electricity. The microphone itself is extremely low-powered and, together with specialized chips, almost free of charge for particular words. There is also an electronic listening device in the hospital, which, in exchange for such a micromicrophone, can be heard directly and no longer have to be listened to。
On the internet, it is said that the technology is out of date, but there are still a number of companies that are changing their materials, depending on the latest bulletin. I heard that nanofilms are better heard and less noise. But we're almost enough with the usual equipment to get a toy to break out a few of these things。
Anyway, this study finally found out how the two feet worked. It's much more interesting than the wiring in the textbooks. Next time we do an electronic project, at least we won't lose control of the two-legged microphone。
